KR102084422B1 - Manufacturing Method of Molded Articles Consisting Plant Fiber - Google Patents

Manufacturing Method of Molded Articles Consisting Plant Fiber Download PDF

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KR102084422B1
KR102084422B1 KR1020190125269A KR20190125269A KR102084422B1 KR 102084422 B1 KR102084422 B1 KR 102084422B1 KR 1020190125269 A KR1020190125269 A KR 1020190125269A KR 20190125269 A KR20190125269 A KR 20190125269A KR 102084422 B1 KR102084422 B1 KR 102084422B1
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fiber
adhesive
weight
manufacturing
molded article
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KR1020190125269A
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Korean (ko)
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방승용
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방승용
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/04—Manufacture of substantially flat articles, e.g. boards, from particles or fibres from fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
    • B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
    • B27N3/002—Manufacture of substantially flat articles, e.g. boards, from particles or fibres characterised by the type of binder
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
    • C08K5/45—Heterocyclic compounds having sulfur in the ring
    • C08K5/46—Heterocyclic compounds having sulfur in the ring with oxygen or nitrogen in the ring
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L5/00—Compositions of polysaccharides or of their derivatives not provided for in groups C08L1/00 or C08L3/00
    • C08L5/02—Dextran; Derivatives thereof
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J103/00—Adhesives based on starch, amylose or amylopectin or on their derivatives or degradation products
    • C09J103/02—Starch; Degradation products thereof, e.g. dextrin

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  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Dry Formation Of Fiberboard And The Like (AREA)

Abstract

The present invention relates to a method for manufacturing a molded article composed of plant fiber. More specifically, the present invention relates to a method for manufacturing a molded article which comprises following steps of: manufacturing plant fiber; manufacturing a mixture by mixing the fiber and an adhesive; and manufacturing the molded article by molding the mixture, wherein the adhesive is made of dextrin, a low molecular weight of sugar, and water, thereby being suitable for manufacturing various types of molded articles.

Description

식물의 섬유질로 이루어진 성형체의 제조방법.{Manufacturing Method of Molded Articles Consisting Plant Fiber}Manufacturing Method of Molded Articles Consisting Plant Fiber

본 발명은 식물의 섬유질로 이루어진 성형체의 제조방법에 관한 것으로, 더욱 상세하게는, 목재, 열매, 농작물 등의 식물로부터 얻어지는 섬유질을 주원료로 하여 이를 압축 성형함으로써 성형체를 제조하는 방법에 관한 것이다.The present invention relates to a method for producing a molded article made of fiber of a plant, and more particularly, to a method for producing a molded article by compression molding the fiber obtained from plants such as wood, fruit and crops as a main raw material.

식물의 열매, 몸체, 잎 등으로부터 얻어지는 섬유질은 다양한 소재로서 활용되고 있다. 특히, 상기 섬유질을 성형하여 성형체를 형성하기도 하는데, 이 경우 접착제와 혼합하여 성형함으로써 성형체를 제조할 수 있다.Fibers obtained from the fruits, bodies, leaves, etc. of plants are utilized as various materials. In particular, the fiber may be molded to form a molded article. In this case, the molded article may be manufactured by mixing with the adhesive.

예를 들어, 대한민국 등록특허공보 10-0565175호에는 무기 접착제와 코코넛 섬유를 이용하여 건축용 흡음성 패널을 제조하고 있으며, 대한민국 공개특허공보 10-2003-0018151호에는 섬유질 소재와 생분해성 결합제, 안정제를 포함하는 조성물을 이용하여 압출 성형함으로써 판상시트를 제조하는 방법이 개시되어 있다.For example, Korean Patent Publication No. 10-0565175 manufactures a sound absorbing panel for building using inorganic adhesive and coconut fiber, and Korean Patent Publication No. 10-2003-0018151 includes a fibrous material, a biodegradable binder, and a stabilizer. A method for producing a plate-like sheet by extrusion molding using a composition to be disclosed is disclosed.

이러한 방법에 의해 얻어지는 성형체는 섬유질의 다공성, 생분해성을 이용한 것이나 고강도의 제품에는 적용하기 곤란하며 다양한 수지, 첨가제 등이 혼합되어야 하기 때문에 친환경적인 재료인 섬유질의 특성을 살리지 못하는 문제점이 있다.The molded article obtained by such a method is difficult to apply to a product having high porosity, biodegradability or high strength of the fiber, and various resins, additives, etc. have to be mixed, and thus there is a problem in that the environmentally friendly material of the fiber cannot be utilized.

대한민국 등록특허공보 10-0565175호Republic of Korea Patent Registration No. 10-0565175 대한민국 공개특허공보 10-2003-0018151호Republic of Korea Patent Publication No. 10-2003-0018151

본 발명은 상기와 같은 종래기술의 문제점을 감안하여 안출된 것으로서, 섬유질을 주원료로 하며 강도가 우수한 성형체의 제조방법을 제공하는 것을 그 목적으로 한다.The present invention has been made in view of the problems of the prior art as described above, and an object thereof is to provide a method for producing a molded article having fiber as a main raw material and having excellent strength.

또한, 섬유질을 다량 함유하더라도 공정 재현성이 높고 생산효율이 향상된 성형체의 제조방법을 제공하는 것을 그 목적으로 한다.Another object of the present invention is to provide a method for producing a molded article having high process reproducibility and improved production efficiency even when a large amount of fiber is contained.

상기와 같은 목적을 달성하기 위한 본 발명의 성형체의 제조방법은 식물의 섬유질을 제조하는 단계, 상기 섬유질과 접착제를 혼합하여 혼합물을 제조하는 단계, 상기 혼합물을 성형하여 성형체를 제조하는 단계를 포함하며, 상기 접착제는 덱스트린, 저분자량의 당, 물로 이루어지는 것을 특징으로 한다.Method for producing a molded article of the present invention for achieving the above object comprises the steps of preparing the fiber of the plant, preparing a mixture by mixing the fiber and the adhesive, forming the molded article by molding the mixture and The adhesive is made of dextrin, low molecular weight sugar and water.

이때, 상기 혼합물은 섬유질 80 내지 95 중량% 및 접착제 5 내지 20 중량%로 이루어질 수 있다.In this case, the mixture may be composed of 80 to 95% by weight of the fiber and 5 to 20% by weight of the adhesive.

또한, 상기 저분자량의 당은 사카린나트륨(sodium saccharin) 또는 사카린칼륨(potassium saccharin)일 수 있다.In addition, the low molecular weight sugar may be sodium saccharin or potassium saccharin.

본 발명의 성형체의 제조방법에 따르면 섬유질을 주원료로 하며 강도가 우수한 성형체를 제조할 수 있다.According to the method for producing a molded article of the present invention, a molded article having a high strength as a main raw material can be produced.

또한, 섬유질을 다량 함유하더라도 공정 재현성이 높고 생산효율이 향상된 성형체를 제조할 수 있다.In addition, even if it contains a large amount of fiber, it is possible to produce a molded article having high process reproducibility and improved production efficiency.

도 1은 본 발명의 제조방법에 따라 제조된 성형체의 시제품 사진이다.1 is a prototype photograph of a molded article produced according to the production method of the present invention.

이하 본 발명을 보다 상세히 설명한다. 본 명세서 및 청구범위에 사용된 용어나 단어는 통상적이거나 사전적인 의미로 한정해서 해석되어서는 아니되며, 발명자는 그 자신의 발명을 가장 최선의 방법으로 설명하기 위해 용어의 개념을 적절하게 정의할 수 있다는 원칙에 입각하여 본 발명의 기술적 사상에 부합하는 의미와 개념으로 해석되어야만 한다.Hereinafter, the present invention will be described in more detail. The terms or words used in this specification and claims are not to be construed as being limited to the common or dictionary meanings, and the inventors may appropriately define the concept of terms in order to best describe their invention. It should be interpreted as meanings and concepts corresponding to the technical idea of the present invention based on the principle that the present invention.

본 발명에 따른 성형체의 제조방법은 식물의 섬유질을 제조하는 단계, 상기 섬유질과 접착제를 혼합하여 혼합물을 제조하는 단계, 상기 혼합물을 성형하여 성형체를 제조하는 단계를 포함하며, 상기 접착제는 덱스트린, 저분자량의 당, 물로 이루어지는 것을 특징으로 한다.Method for producing a molded article according to the invention comprises the steps of preparing the plant fibers, mixing the fibers and the adhesive to prepare a mixture, molding the mixture to produce a molded article, the adhesive is dextrin, low It consists of sugar and water of molecular weight.

상기 성형체는 지관, 파이프 등의 원통형 형상, 파레트, 상자, 가구 부품 등의 다각형 형상, 시트, 보드, 건축용 패널 등의 평판 형상을 들 수 있다. 또한, 상기 성형체의 주원료는 식물의 섬유질이며, 성형 공정을 위하여 부가되는 접착제 외에 다른 성분들은 부가되지 않고도 제조할 수 있다. 물론, 목적하는 성형체의 용도에 따라 충진제, 안료 등을 부가하여 기능성을 부여할 수 있으나, 이러한 추가되는 성분이 성형체 자체의 물성을 향상시키기 위한 용도는 아니다.Examples of the molded body include cylindrical shapes such as paper tubes and pipes, polygonal shapes such as pallets, boxes, and furniture parts, and flat shapes such as sheets, boards, and building panels. In addition, the main raw material of the molded body is the fiber of the plant, it can be produced without addition of other components than the adhesive added for the molding process. Of course, it is possible to impart functionality by adding fillers, pigments and the like depending on the intended use of the molded body, but these additional components are not intended to improve the physical properties of the molded body itself.

상기 식물의 섬유질은 목재, 열매, 농작물 등의 식물 원료로부터 얻어지는 것으로서, 열매의 과피, 나무 몸체, 잎, 줄기 등에서 얻어질 수 있다.The fiber of the plant is obtained from plant raw materials such as wood, berries, crops, and the like, and may be obtained from fruit rinds, tree bodies, leaves, stems, and the like.

또한, 상기 혼합물은 섬유질 80 내지 95 중량% 및 접착제 5 내지 20 중량%로 이루어지기 때문에 섬유질을 다량 포함하는 원료로 성형체를 제조하여 제조 효율을 향상시킬 수 있다. 이는 섬유질 자체의 얽힘 현상과 표면적에 기인한 것으로서, 소량의 접착제를 첨가하여 가압 또는 가열 및 가압을 함으로써 원하는 성형체를 쉽게 제조할 수 있게 된다.In addition, since the mixture is made of 80 to 95% by weight of fiber and 5 to 20% by weight of adhesive, a molded article may be manufactured from a raw material containing a large amount of fiber to improve manufacturing efficiency. This is due to the entanglement and the surface area of the fiber itself, it is possible to easily produce a desired molded body by adding a small amount of adhesive to pressurized or heated and pressed.

상기 접착제는 소량 첨가되기 때문에 섬유질의 접착력을 향상시키고 성형 가공성이 우수한 접착제를 사용하는 것이 바람직하다. 본 발명에서는 상기 접착제로서 유기 화합물을 사용하지 않고 천연성분인 덱스트린, 저분자량의 당, 물로 이루어진 조성물을 사용한다. 또한, 유기용제를 전혀 사용하지 않기 때문에 공정상의 유해성이나 성형체로부터 유해 화학물질의 발생이 전혀 없게 된다.Since the adhesive is added in a small amount, it is preferable to use an adhesive that improves the adhesive strength of the fiber and has excellent moldability. In the present invention, a composition composed of natural dextrin, low molecular weight sugar, and water is used without using an organic compound as the adhesive. In addition, since no organic solvent is used at all, there is no process hazard or generation of harmful chemicals from the molded body.

상기 접착제를 구성하는 덱스트린은 전분(녹말)을 가수분해하여 얻어지는 저분자량의 당 성분으로서 전분보다 분자량이 작은 다당류이다. 상기 덱스트린을 접착제 성분으로 사용하면 섬유질 내에서 침투력이 우수하여 성형 공정에서 섬유질 간의 결합을 양호하게 수행할 수 있다. 상기 덱스트린은 화학 구조식이 (C6H10O5)n으로서 n이 6 내지 8의 저분자량의 물질을 사용하는 것이 바람직하다.Dextrin constituting the adhesive is a low molecular weight sugar component obtained by hydrolyzing starch (starch) and is a polysaccharide having a lower molecular weight than starch. When the dextrin is used as an adhesive component, the penetrating force is excellent in the fiber, and thus the bonding between the fibers can be performed well in the molding process. The dextrin is a chemical formula (C 6 H 10 O 5 ) n It is preferable to use a low molecular weight material of n is 6 to 8.

상기 덱스트린과 함께 사용되는 추가적인 저분자량의 당을 사용함으로써 접착제의 성능을 향상시킬 수 있는데, 구체적으로는 사카린을 들 수 있다. 덱스트린은 화학 구조식이 (C6H10O5)n으로서 분자량이 전분보다는 상대적으로 작으나 다당류이므로 섬유질의 접착력을 향상시킬 수 있는 성분의 추가가 필요하다. 사카린은 화학 구조식이 C7H5NO3S이며, 분자량이 183.18g/mol인 저분자량의 당인데, 나트륨염 또는 칼륨염의 형태를 이루면 아미노기를 안정화시켜 섬유질 내에서 침투력이 더욱 향상되는 것으로 나타났다. 실험적으로는 덱스트린 100 중량부에 대하여 사카린 나트륨 또는 사카린 칼륨을 5 내지 10 중량부의 범위로 함유할 때 효과가 우수한 것으로 나타났다.By using an additional low molecular weight sugar used in conjunction with the dextrin can improve the performance of the adhesive, specifically, saccharin. Dextrin is a chemical structural formula (C 6 H 10 O 5 ) n and the molecular weight is relatively smaller than starch, but is a polysaccharide, so it is necessary to add a component that can improve the adhesion of the fiber. Saccharin is a low molecular weight sugar having a chemical formula of C 7 H 5 NO 3 S and a molecular weight of 183.18 g / mol. When saccharin is in the form of sodium salt or potassium salt, it has been shown that the amino group is stabilized to further improve penetration in the fiber. Experimentally, it was shown that the effect was excellent when containing saccharin sodium or saccharin potassium in the range of 5-10 weight part with respect to 100 weight part of dextrin.

또한, 분자량이 180.16g/mol인 포도당을 사용해도 저분자량의 당이므로 어느 정도의 접착력 향상의 효과를 얻을 수 있었으나, 실험적으로 성형체의 강도가 다소 낮게 나타났다. 이는 포도당이 저분자량의 당임에도 불구하고 수산기를 함유하여 섬유질 내에서의 침투속도가 상대적으로 느리기 때문으로 추측되었다.In addition, even when glucose having a molecular weight of 180.16 g / mol was used as a low molecular weight sugar, it was possible to obtain an effect of improving adhesion to some extent, but the strength of the molded article was somewhat lower experimentally. This is presumed to be due to the relatively slow penetration rate in the fiber because it contains hydroxyl groups even though glucose is a low molecular weight sugar.

따라서 상기 접착제는 덱스트린과 저분자량의 당(사카린 나트륨 또는 사카린 칼륨)의 혼합물에 덱스트린 100 중량부를 기준으로 80 내지 200 중량부의 물을 혼합함으로써 제조할 수 있으며, 이러한 접착제는 충분한 점성과 섬유질 내에서 빠른 분산 속도를 나타내어 침투력이 향상되기 때문에 성형 공정에 적합한 것으로 나타났다.Thus, the adhesive can be prepared by mixing 80 to 200 parts by weight of water, based on 100 parts by weight of dextrin, with a mixture of dextrin and low molecular weight sugars (saccharin sodium or saccharin potassium), which adhesives are fast enough in viscosity and fiber. It has been shown to be suitable for the molding process because of its dispersion rate and improved penetration.

상기 섬유질과 접착제의 혼합물은 섬유질에 접착제를 부가한 후 10 내지 30분 간 혼련함으로써 제조될 수 있다. 이는 상기 접착제의 빠른 분산력에 기인한 것이다.The mixture of fibers and adhesive may be prepared by kneading for 10 to 30 minutes after adding the adhesive to the fibers. This is due to the fast dispersing force of the adhesive.

이러한 혼합물을 성형하면 다양한 형태의 성형체를 제조할 수 있다. 예를 들어, 가압 성형에 의해 필름 권취용 지관을 제조할 수 있는데, 이는 출원인의 필름 권취용 지관의 제조방법에 관한 종래기술(등록특허 10-1940282호)에 개시된 것과 같은 성형 장치를 이용하여 제조할 수 있다.Molding such a mixture can produce shaped articles of various forms. For example, it is possible to produce a film winding paper tube by pressure molding, which is manufactured using a molding apparatus as disclosed in the prior art (patent 10-1940282) of the applicant's method for producing a film winding paper tube. can do.

이 경우 종래기술과는 달리 유기 화합물을 전혀 사용하지 않고, 특히, VOC를 유발하는 유기 용제를 전혀 사용하지 않기 때문에 친환경적인 제조공정으로 성형체의 제조를 할 수 있다. 또한, 상기 혼합물은 성형틀에 투입되더라도 접착제가 혼합되어 비산이 발생하지 않기 때문에 공정 편의성이 우수하며 가압 성형을 통해 다양한 형태의 성형체를 가공할 수 있다.In this case, unlike the prior art, since the organic compound is not used at all, and in particular, the organic solvent which causes VOC is not used at all, the molded body may be manufactured by an environmentally friendly manufacturing process. In addition, the mixture is excellent in process convenience because the adhesive is mixed even if it is put into the molding die and can be processed into various forms through pressure molding.

본 발명의 제조방법의 효율을 확인하기 위하여 다음과 같이 실험을 실시하였다.In order to confirm the efficiency of the production method of the present invention, the experiment was carried out as follows.

식물성 섬유질로서 코코넛 섬유질을 사용하였는데, 먼저 코코넛 열매에서 과피를 분리한 후, 상기 과피를 분쇄하였다. 이후, 분쇄된 생성물을 증기로 찌고 이를 압착한 후 다시 분쇄하여 코코넛 섬유질을 제조하였다.Coconut fiber was used as the vegetable fiber, which was first separated from the coconut fruit and then ground. Thereafter, the ground product was steamed, compressed, and then ground again to prepare coconut fiber.

또한, 덱스트린 분말 100 중량부에 사카린 칼륨을 8 중량부 혼합하고 여기에 100 중량부의 증류수를 가한 후 추가적으로 혼합하여 접착제를 제조하였다.In addition, 8 parts by weight of saccharin potassium was mixed with 100 parts by weight of dextrin powder, 100 parts by weight of distilled water was added thereto, followed by additional mixing to prepare an adhesive.

상기 코코넛 섬유질과 상기 접착제를 9:1의 중량비로 혼합하여 혼합물을 제조한 후 등록특허 10-1940282호에 개시된 성형 장치를 이용하여 40 내지 50℃의 온도, 300㎏/㎠의 압력을 2분 간 가압하여 성형하였다. 그 결과 도 1에 도시된 것과 같이 내경 76㎜, 두께 10㎜, 길이 100㎜의 지관을 제조하였다(실시예 1).The coconut fiber and the adhesive are mixed at a weight ratio of 9: 1 to prepare a mixture, and then, using a molding apparatus disclosed in Korean Patent No. 10-1940282, a temperature of 40 to 50 ° C. and a pressure of 300 kg / cm 2 for 2 minutes. It was molded by pressing. As a result, as illustrated in FIG. 1, a branch pipe having an inner diameter of 76 mm, a thickness of 10 mm, and a length of 100 mm was manufactured (Example 1).

또한, 실시예 1과 동일한 방법으로 지관을 제조하되 사카린 칼륨 대신 사카린 나트륨을 8 중량부 혼합하여 제조한 접착제를 사용하여 지관을 제조하였다(실시예 2).In addition, the branch was manufactured in the same manner as in Example 1, but the branch was manufactured by using an adhesive prepared by mixing 8 parts by weight of sodium saccharin instead of saccharin potassium (Example 2).

비교를 위하여, 실시예 1과 동일한 방법으로 지관을 제조하되 덱스트린 분말 100 중량부에 사카린보다 분자량이 큰 아스파탐 8 중량부를 혼합하고 여기에 100 중량부의 증류수를 가하여 제조한 접착제를 사용하여 지관을 제조하였다(비교예 1).For comparison, a paper tube was prepared in the same manner as in Example 1 except that 8 parts by weight of aspartame having a higher molecular weight than saccharin was mixed with 100 parts by weight of dextrin powder, and 100 parts by weight of distilled water was added thereto to prepare a paper tube. (Comparative Example 1).

또한, 실시예 1과 동일한 방법으로 지관을 제조하되 포도당 8 중량부를 혼합하여 제조한 접착제를 사용하여 지관을 제조하였다(비교예 2).In addition, the branch was manufactured in the same manner as in Example 1, but the branch was manufactured using an adhesive prepared by mixing 8 parts by weight of glucose (Comparative Example 2).

또한, 실시예 1과 동일한 방법으로 지관을 제조하되 덱스트린 분말 100 중량부 및 증류수 100 중량부를 혼합하여 제조한 접착제를 사용하여 지관을 제조하였다(비교예 3).In addition, a paper tube was manufactured in the same manner as in Example 1, but a paper tube was manufactured using an adhesive prepared by mixing 100 parts by weight of dextrin powder and 100 parts by weight of distilled water (Comparative Example 3).

또한, 실시예 1과 동일한 방법으로 지관을 제조하되 사카린 나트륨 100 중량부 및 증류수 100 중량부를 혼합하여 제조한 접착제를 사용하여 지관을 제조하였다(비교예 4).In addition, a paper tube was manufactured in the same manner as in Example 1, but a paper tube was manufactured using an adhesive prepared by mixing 100 parts by weight of saccharin sodium and 100 parts by weight of distilled water (Comparative Example 4).

제조된 지관의 편평 내압강도를 측정한 결과 실시예 1 및 2에서는 각각 1.89, 1.87kN/100㎜의 값을 얻어 높은 내압강도를 나타내는 것을 확인하였다.As a result of measuring the flat breakdown strength of the manufactured paper pipe, it was confirmed that in Examples 1 and 2, the values of 1.89 and 1.87kN / 100 mm were obtained, respectively, to show high breakdown strength.

그러나 비교예 1 및 2에서는 편평 내압강도가 각각 1.65, 1.70kN/100㎜으로 내압강도가 낮아지는 경향을 나타내었으며, 비교예 3 및 4에서는 편평 내압강도가 각각 0.86, 0.68kN/100㎜에 불과한 것으로 나타나 덱스트린과 저분자량의 당을 혼합했을 때와 그렇지 않을 때의 강도의 차이가 큰 것으로 나타났다. 특히, 비교예 2의 경우, 덱스트린에 혼합하는 저분자량의 당으로 포도당을 사용했으나 사카린에 비해서는 다소 낮은 내압강도를 나타내어 섬유질에 적합한 접착제의 원료의 선정이 매우 중요한 요소임을 확인하였다.However, in Comparative Examples 1 and 2, the flat breakdown strengths were 1.65 and 1.70 kN / 100 mm, respectively, and the breakdown strengths tended to decrease. In Comparative Examples 3 and 4, the flat breakdown strengths were only 0.86 and 0.68 kN / 100 mm, respectively. The difference in strength between the dextrin and low-molecular-weight sugars was large. Particularly, in the case of Comparative Example 2, glucose was used as the low molecular weight sugar mixed with dextrin, but the pressure resistance was somewhat lower than that of saccharin, so it was confirmed that selection of a raw material of an adhesive suitable for fiber was a very important factor.

본 발명에 따른 성형체의 제조방법은 식물의 섬유질을 주원료로 사용하는 점, 접착제로서 유해 화학물질이나 유기 용제를 전혀 사용하지 않는 점에서 일반적인 플라스틱 성형체의 제조공정에 비해 친환경적이며, 또한, 전체 원료가 생분해성 물질로서 폐기할 경우 토양에서 자연 부식되기 때문에 폐기물 발생의 우려도 줄어든다. 또한, 다양한 성형 공정에 쉽게 적용할 수 있기 때문에 실시예에 기재된 원통형의 지관뿐만 아니라 파레트, 사각 용기, 건축용 패널, 가구 부품 등 강도를 요구하는 각종 성형체의 제조에 쉽게 적용할 수 있다.The manufacturing method of the molded article according to the present invention is environmentally friendly compared to the general manufacturing process of the plastic molded article in that the fiber of the plant is used as the main raw material, and no toxic chemicals or organic solvents are used as the adhesive, and the whole raw material is Disposal as a biodegradable material will naturally corrode in the soil, reducing the risk of waste generation. In addition, since it can be easily applied to various molding processes, it can be easily applied to the production of various molded articles requiring strength such as pallets, rectangular containers, building panels, furniture parts, as well as the cylindrical paper tubes described in the examples.

본 발명은 상술한 바와 같이 바람직한 실시예를 들어 설명하였으나, 상기 실시예에 한정되지 아니하며 본 발명의 정신을 벗어나지 않는 범위 내에서 당해 발명이 속하는 기술분야에서 통상의 지식을 가진 자에 의해 다양한 변형과 변경이 가능하다. 그러한 변형예 및 변경예는 본 발명과 첨부된 특허청구범위의 범위 내에 속하는 것으로 보아야 한다.Although the present invention has been described with reference to preferred embodiments as described above, the present invention is not limited to the above-described embodiments, and various modifications may be made by those skilled in the art without departing from the spirit of the present invention. You can change it. Such modifications and variations are intended to be within the scope of the invention and the appended claims.

Claims (3)

식물의 섬유질을 제조하는 단계;
상기 섬유질과 접착제를 혼합하여 혼합물을 제조하는 단계;
상기 혼합물을 성형하여 성형체를 제조하는 단계;
를 포함하며,
상기 접착제는 덱스트린 100 중량부에 대하여 저분자량의 당인 사카린 나트륨 또는 사카린 칼륨 5 내지 10 중량부, 물 80 내지 200 중량부로 이루어지는 것을 특징으로 하는 식물의 섬유질로 이루어진 성형체의 제조방법.
Preparing fiber of the plant;
Mixing the fibers with an adhesive to prepare a mixture;
Forming a mixture by molding the mixture;
Including;
The adhesive is a method for producing a molded article made of fiber of a plant, characterized in that consisting of 5 to 10 parts by weight of saccharin sodium or saccharin potassium, 80 to 200 parts by weight of water, a sugar of low molecular weight with respect to 100 parts by weight of dextrin.
청구항 1에 있어서,
상기 혼합물은 섬유질 80 내지 95 중량% 및 접착제 5 내지 20 중량%로 이루어지는 것을 특징으로 하는 식물의 섬유질로 이루어진 성형체의 제조방법.
The method according to claim 1,
The mixture is 80 to 95% by weight of the fiber and 5 to 20% by weight of the adhesive, characterized in that the manufacturing method of the molded body consisting of the fiber of the plant.
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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5863322A (en) * 1996-09-26 1999-01-26 Akzo-Pq Silica Vof Adhesive compositions comprising water glass, an oligosaccharide, and a mono-, di- or tri-saccharide
KR20030018151A (en) 2001-08-27 2003-03-06 에코니아 주식회사 Composion for producing a biodegradable plastic goods and for producing a plastic goods using the same
JP2005096845A (en) * 2003-08-27 2005-04-14 Showa Marutsutsu Co Ltd Compact
KR100565175B1 (en) 2004-05-18 2006-03-30 주식회사 주아이 Method for manufacturing panel having sound-absorbing power and panel manufactured by the same
KR20180019383A (en) * 2016-08-16 2018-02-26 명창민 Manufacturing method of chip-board
JP2018199793A (en) * 2017-05-29 2018-12-20 ヘンケルジャパン株式会社 Aqueous adhesive composition

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5863322A (en) * 1996-09-26 1999-01-26 Akzo-Pq Silica Vof Adhesive compositions comprising water glass, an oligosaccharide, and a mono-, di- or tri-saccharide
KR20030018151A (en) 2001-08-27 2003-03-06 에코니아 주식회사 Composion for producing a biodegradable plastic goods and for producing a plastic goods using the same
JP2005096845A (en) * 2003-08-27 2005-04-14 Showa Marutsutsu Co Ltd Compact
KR100565175B1 (en) 2004-05-18 2006-03-30 주식회사 주아이 Method for manufacturing panel having sound-absorbing power and panel manufactured by the same
KR20180019383A (en) * 2016-08-16 2018-02-26 명창민 Manufacturing method of chip-board
JP2018199793A (en) * 2017-05-29 2018-12-20 ヘンケルジャパン株式会社 Aqueous adhesive composition

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